Yes » When the latch of the burner is not closed fast enough, it is possible that the fumes of the bio-fuel escape through an opening and catch fire. Re-open the latch and close it again in one quick move. If the burner still does not extinguish, there is probably fuel in the outer reservoir. Let the burner burn out or extinguish the lame with a wet cloth. BEWARE: the latch of the ceramic burner is no flame regulator! It is possible that the latch has bent as a result of misuse, if you think this is the case inspect after the burner has been extinguished and cooled down.